Evan wants to buy some files of the same price. If she buys 2 files, she will have $6.60 left. If she buys 4 files, she will short of $2.10.
- How much does each file cost?
- How much does Evan have?
(a)
Difference in the number of files
= 4 - 2
= 2
Amount that Evan needs to buy 2 files
= 6.60 + 2.10
= $8.70
Cost of each file
= 8.70 ÷ 2
= $4.35
(b)
Amount that Evan has
= 2 x 4.35 + 6.60
= $15.30
Answer(s): (a) $4.35; (b) $15.30